The most important class of rock-forming is on earth is: a) halides b) sulfates

Question

The most important class of rock-forming is on earth is: a) halides b) sulfates c) native manuals d) silicates e) asbestos The three demands most in the earths crust are: a) Helium, hydrogen, oxygen b) iron, magnesium, aluminum c) silicon, oxygen, aluminum d) silicon, oxygen, iron e) iron, silicon A finally crystalline or indicates that: a) there was a lot of gas magma b) the rock cooled quickly c) the rock broke flowed d) the rock cooled slowly e) the and were hot and become compacted A indicates that: a) there was a lot gas in the magma b) the rock cooled quickly c) the rock broke apart as if flowed d) the rock cooled slowly e) the were not and become competed.

Explanation / Answer

5)d)silicate

Silicates rock forming mineral class.

6)c)silicon,oxygen,aluminium

7)b)the rock cooled quickly

8)d)the rock cooled slowly and then quickly.

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